Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Science team discovers Mistfall trace in alien tissue
S18E11
·
Full Circle Part 3
To
Doctor discovers Romana has vanished
S18E11
·
Full Circle Part 3
Why These Connect
The narrative assertion
"Adric’s discovery that Romana has vanished (triggered by the Doctor’s scientific analysis) leads directly to the urgent investigation in her room, where the Doctor deduces she was taken by marshmen—bridging the ethical-scientific thread with the survival drama."
About Causal Connections
A directly causes B. The first event sets forces in motion that produce the second. These are the load-bearing connections of plot--remove one and the story structure collapses.